using SYBDContracts.BindingModels;
using SYBDContracts.SearchModels;
using SYBDContracts.StoragesContracts;
using SYBDContracts.ViewModels;
using SYBDDatabaseImplement.Models;

namespace SYBDDatabaseImplement.Implements
{
    public class InsuranceStorage : IInsuranceStorage
    {
        public List<InsuranceViewModel> GetFullList()
        {
            using var context = new SYBDDatabase();
            return context.insurance
                    .Select(x => x.GetViewModel)
                    .ToList();
        }

        public List<InsuranceViewModel> GetFilteredList(InsuranceSearchModel model)
        {
            if (string.IsNullOrEmpty(model.Name))
            {
                return new();
            }
            using var context = new SYBDDatabase();
            return context.insurance
                    .Where(x => x.Name.Contains(model.Name))
                    .Select(x => x.GetViewModel)
                    .ToList();
        }

        public InsuranceViewModel? GetElement(InsuranceSearchModel model)
        {
            if (string.IsNullOrEmpty(model.Name) && !model.Id.HasValue)
            {
                return null;
            }
            using var context = new SYBDDatabase();
            return context.insurance
                    .FirstOrDefault(x => (!string.IsNullOrEmpty(model.Name) && x.Name == model.Name) ||
                                        (model.Id.HasValue && x.Id == model.Id))
                    ?.GetViewModel;
        }

        public InsuranceViewModel? Insert(InsuranceBindingModel model)
        {
            var newInsurance = Insurance.Create(model);
            if (newInsurance == null)
            {
                return null;
            }
            using var context = new SYBDDatabase();
            context.insurance.Add(newInsurance);
            context.SaveChanges();
            return newInsurance.GetViewModel;
        }

        public InsuranceViewModel? Update(InsuranceBindingModel model)
        {
            using var context = new SYBDDatabase();
            var component = context.insurance.FirstOrDefault(x => x.Id == model.Id);
            if (component == null)
            {
                return null;
            }
            component.Update(model);
            context.SaveChanges();
            return component.GetViewModel;
        }

        public InsuranceViewModel? Delete(InsuranceBindingModel model)
        {
            using var context = new SYBDDatabase();
            var element = context.insurance.FirstOrDefault(rec => rec.Id == model.Id);
            if (element != null)
            {
                context.insurance.Remove(element);
                context.SaveChanges();
                return element.GetViewModel;
            }
            return null;
        }
    }
}